Heater Blower Motor Mounting, Mine seems to be constant ground due to mounting... |
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Heater Blower Motor Mounting, Mine seems to be constant ground due to mounting... |
ptravnic |
Apr 27 2011, 03:05 PM
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#1
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Senior Member Group: Members Posts: 1,231 Joined: 27-May 03 From: Chicago, IL Member No.: 747 Region Association: None |
Hi all,
I have a 72 which does not have the nice U shaped blower motor mount in the engine compartment that the later years have. I'm operating under the impression that this bracket is the early stock mount for the motor assembly: However, since the ground is supposed to be intermittent (actuates when the red cockpit lever is pulled up all the way) I have the problem where, because the above pictured mount grounds the entire assembly, I'm always grounded causing the blower to start up as soon as I turn on the ignition. I've tested my ground/red lever as the actuator when the motor assembly is not mounted (thus not automatically grounded) and it works like its supposed to - lever goes up and the motor turns on. Is there a way to separate the actual motor from the assembly so that it is not grounded when mounted? Maybe the rubber piece in the first pic goes somewhere that I'm obviously missing? Is there another way to mount the motor assembly that I just don't know of? (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/hissyfit.gif) Thanks in advance! -pt ps - cross posted from the Club site. I'm staying out of the turf wars b/c I like folks on both boards... (IMG:style_emoticons/default/grouphug.gif) |
euro911 |
Apr 27 2011, 11:15 PM
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#2
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,851 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
Hmmm (IMG:style_emoticons/default/idea.gif) ... is that why the fan on our '71 rattles so much?
Who sells replacement grommets? Regardless, I wouldn't think grounding the mounting bracket or fan housing would cause the fan to run continuously, grommets or not. The fan's power connector has a positive wire (green or yellow IIRC) and a ground wire (brown). Edit: Just performed an electrical check of the fans from our 1971 and our 1975. The VOM confirms that ground wires are the same potential as the housings (grounded). And both fan motors work. Porsches and VWs have some interesting electrical quirks. I don't remember exactly why, but I disconnected the heater fan wiring connections and apparently reconnected them wrong (reversed polarity). When I activated the heater lever, the ignition or injection system started missing (never did find out exactly which one). Luckily it was an easy fix, as the fan wiring connections was the only 'change' I had recently done to the car. Reconnected it correct polarity and everything was back to normal. (IMG:style_emoticons/default/driving.gif) |
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